Which class of immunity is a result of acquring antibodies from another induvidual?

The class of immunity resulting from acquiring antibodies from another individual is known as passive immunity. This can occur naturally, such as when a mother transfers antibodies to her fetus through the placenta or through breast milk. It can also be acquired artificially, such as through the administration of antibody-containing serum. Passive immunity provides immediate protection but is temporary, as the body does not produce its own antibodies in this case.